Latch mechanism



Sept; 7, 194-3. N l 2,329,120

LATCH MECHANI SM I Filed March 27, 1941 2 Sheets-Sheet 1 Q INV ENTOR 7 7%: gi f6 7)! 41 273- A ORNEY5.

Sept. 7, 1943;

Filed March 27, 1941 T N. KING 2,329,120

LATCH MECHANISM 2 Sheets-Sheet 2 INVENTOR 77601022 wk I Y Me, ORNEYS.

LATCH meonmisiii;

i Theodore N; King Hahoook' Jackson; assignor to aoturing Company,- Jackson,

Mixih or entation of Michigan v ,Ap ntaemMm-en 2v, itiifstfial 295,512 I seems-.1 on-29 244) i I standing ofthe resent inventionithat -in the flf'he present invention relates to latohing -dee vme m no in partieular provides an improved latch constriiotioii of the rotary bolttype; .The pririoibal olojeots ofthe present invention ito prov de a; latoh,oonstruction of the above 1 gene al -ttf'le, ;which is simple in; construction,

eoonom a ofmanufacture, and which is are?v liable ehdeficient in-operationgto provide such a eohstriiotion embodyingan improved arrange-7 'hei t fgir holding an associated'door in the paryelosed or safetype'sition; tO" provide such an arrangement wherein the door is-providedi with a bol t which releasaloly engages-Ta keeper harried on thetass ociated pillar, and is also pro-5 'vi ded with a. supplemental or safety. bolt which e'0'qp'erate :s withthepillar to ,-h'old *;the door ina partially closed or Safety position to provide broader aspects the improvements thereof be; applied tome, variety'of uses other thanfthe v I latchingof automobile doors, and that suchim movements; -may be embodied inggforms which.

differqfromtheyspecific forms hereinJdisclosed;

. By way of "illustration gb'llt' not :of limitation; the.

present improvements are, herein disolosedas ap-r pl-i'ed toth e latching'of. the-'rear'door of an auto-,1

mobile,'--l- H Rieferrin-g tothe drawings, ,thegiliustrative rear;

' door .10 :is; -hinged,, by ;means n t shown, along,

its frontszedge to the pillar ll of the associated.

vehiole'fbodya. The rearedgeof theydoor is prio; vided withi'a rout-away portioni4 to aiocflommodate the rear wheel-housing of, the ,assojoiatedj body,1 ahduithisc-outmway portion extends up;

such 1 astructure wherein {the bolt 1's provided with holding means whichv are retractable; but whieh'norh ally prevent themainiboltf from he":

vigg released from-the keeper, and wherein the; means for. retracting the holding means -;is 5 also: eiteotive toretraot the safety-bolt, so as to permit? az ppen ng movement of the door; and-to pro such 2, stz liotlire wherein the;- supplement-ab 9. mi! my ment f h es re racted; asiafor'e'saidl v a il lfistri'at ive'eni bodirnent of theinvention is-=showm in., he. accompanying;- drawings; throughout the several views, .of; which corresponding reference characters are used todesignate corresponding T Fig": '3. is f'a 'dtai along the th showing the parts infth'e -positions oecepi'e'd wn n' keeper; showing the partsin 'thefsame relation away portionylki' V 7 Except in-respects:hereinafter noted, the latch re r a le 3? d n a c osin ent qf the-dponhut positively prevents an with pt i fq -r l i e de r pti 1 and 1n. the; appended claims, a I preferred-bot wardl$ itofa :point relatively close to the window opening 16 of thedoor iii]. The latch [B -19181 ceived withintthe body :of the door in the ,vertieal;

space betweemtherwindowopening and the cu 3"-fo1lows-theconstruction of Patent No.1

2,195,179; granted -March 26, -1940,;;and "com-: prises-generally a-rotarylbolt 2 22, having :-,.:a: series ofsequi-fangularly spaced; generally radial- 1y extending?: keep'eraengaging teeth 24 and= -a;' corresponding ;series ;of 1 cam engaging :teeth- 26.- Thebolt'22 ispivotally supported upon theifianget of the-,case' plate by means of a; pivot *pin'qZB;

one end? whereof: is j'ourna-lled in a: housingl'ety fWhiChB HCIOSES thGiJOWGI portion ofthat part ofe'thebolt 22which projectsoutwardly of the in? inwardly? spacedv relation thereto. 1 The dofor'f rail 'llla and the flangeM of the case plate are! provided with registering -"openings through which "the body oithe bolt '22 andthe housing: 39 are' projected, .and' it will be observed that" the keeper'jlengagingte'eth 24 are positioned 'eX-,; terhally of the doorJrail Illa, Whereas the cam engaging teeth 26' are" positioned withi'n' the' door-,fiin the 'space" between. the case plate flange-1*",

34 and the deck-32. v e e In order 'to' i prevent rotation brine- 5bit 22in" a-doo'roperiihg"direction; the bolt is providedwithi It win he appreciated fror n a. comhlete underf 21;series;"three being shown, of cams designated:

collectively" as 35 The :mms 36 I are' pivotally" .supported'ibetweeh-the flange 34 andthe deck 32" by means "of "a pin38', and. the upper endiporw tions-=36av-of :the;v cams; 36 are deflected .to ac+ oommodatefthe'"correspondingly an l portion,

of the rail I9a. The cams 36 are continuously biased to the normal posit-ions shown in Fig. 5, by means of usual springs 40, one whereof is provided for each cam. In accordance with the arrangement disclosed in the above-numbered patent, the cams 36 are, relative to each other, of progressively increasing size, and the shortest cam is provided with a laterally ofiset foot,

42 for cooperation with the nose 44 of the here-;

inafter described retracting lever 46. In addition, the just-mentioned shortest cam is provided with a second foot 48, which overlies the backs of the other cams, so that a retracting movement of such shortest cam is accompanied by corresponding retracting movements oflthe other cams.

therefrom by means of a pivot pin 84, and is pro- J Slot 98, provided in the link Illfl'which, as will be The rail I0a of the door is provided withan abutment 50, which extends outwardly therefrom towards the pillar I2, and which-ispositioned above the outer or keeper engaging teeth I 24 of the bolt. The keeper 52, which is herein illustrated is being formed from astamping, is secured to the portion I3 of the body which opposes the door rail I0a and, when thedoor is closed, extends into the space betweenthe abut- L ment 50 and the bolt 22 The keeper 52 is provided with an upper surface 54, which slopes up wardly in the direction of door closing -movement, and the cooperating under surface'ofthe abutment 50 is correspondingly angled. The

lower side of the keeper 52 is of toothlike form,

understood, extends to the usual inside handle I03. The just-mentioned pin and slot provide,

as will be understood, a lost motion connection between the retracting lever 46 and the link I00.

The supplemental lever 92 is disposed to be operated by the usual rollback I02, which is providedwith a squared spindle I04. The spindle IB L-in turn, is connected to the outside door handle I06, and it will be understood that, if desired, the rollback I02 maybe of the scissorlike form described and'claimed in Moore Patent No; 1,395,893, which is assigned to the assignee of Y the present application. 'The retr'acting lever 46 andthe previously mentioned stamping 66, associated with the supplemental bolt 60, are con nected together by a rod H0," one turned end II2 whereof is hooked through-the end of the having a surface 56 for initial engagementby a tooth of the bolt during a closing movement of the door, and having an upwardly angled hold- 7 ing surface which is engaged by a tooth'24 of the boltwhenthe door is' fullyclosed. 1 a

In accordance with the present-arrangements the keeper 52 and the bolt 22 cooperate to'hold' the door in the fully closed position, as'will be appreciated, and the means. for holdin-g the door in a partially closed or safety positioncomprises a supplemental bolt 60, which is-carried by'the' door I0 and cooperates with an" abutment or keeper 62, which is carried by the previously mentioned portion I3 of the body. In its normal position, the supplemental bolt 60projects outl wardly from the door rail 'I0a in the cut-away portion I4 thereof. The supplemental bolt 60 is pivotally mounted'bymeans of a". pin 64 in a channel-shaped stamping 66, which in turn 'is' pivotally supported on a pin 68. The-pin66 is supported by the portion I0 o-f'the lease plate flange, which portion is angled to conform'to' the cut-away portion I4 of the door. The'portion I0 is provided with a slotlike opening having the side walls I2 and I4, between which the stamping .66 is received when the-supplementah bolt 60 is in its active position, and the rail IIIa of the door is provided with an opening I5 through which the bolt 60 projects. The supplemental bolt 60 is normally urged to the position shown in Fig. 7, bymeans of a torsion spring I8, which is coiled about the pin 64,but, as'will be appreciated,- may be swung counterclockwise against the force of the spring 18,-so as toenable the bolt 60 to pass over the abutment a closing movement of the door.. 5 r

.The means for retracting the cams 36 from holding engagement with the bolt 22, and for: also rocking the stamping 66 about the pivot pin 68, so as to retract the :supplementalbolt 69 into 62 during the door, comprises 'thepreviously mentioned r'e-- Lever 46 is pivotally mounted.

tracting lever 46. r between the base 80 of thecase plate and a usual. deck 82, which is carried thereby but spaced lever '46, and the other turned end II4 whereof is'hooked through the stamping 'si. With this relation, it will be appreciated that each clockwise movement of the lever 46, which occurs in response to an'operationof 'either the inside or' outside handle, as-hereinafter described, rocksthe stamping-66 about thepivot pinta" and elevates the supplemental bolt 60 out'of range of'the cooperating abutment 62. I I V In accordance with the disclosure of the eopending application of Rollo Marple, Serial No.

' 235,982, filed October 20,193 8,"and, assigned to the assignee hereof, the present "arrangement employs a locking-roller I20,"which is carried at' the end of a link I22 and one end whereotrldes in anelonga'ted slot I24 in the plate 80. 'The other end or the'link I22'is connectedythroughfa bellv crank I26, to a locking push button 128, which normally projects upwardly through. the garnish molding of the door I0. A depressingmovement of the push button I28 causes the, roller I20 to advance downwardly andto the right, as viewed in Figs. 2 and 4, and brings the body of the jroller I20'into blocking relation to the arcuatc portion I30 of the'retracting" lever 46. With the roller I20 in the just-mentioned position, clockwise or retracting movement of the lever 46 is prevented, and both the inside and outside handles are consequently rendered ineffective to release the bolt. Inorder to enable aclosing movement of the door to-reset the locking roller I20 to the unlocked position. of Figs 2 and 4, th1e kickoff lever I32 is provided. The lever I32 is pivoted on the previously mentioned pin 84 between'the retracting lever 46 and the deck 82." One end I34 of the lever I32 lies beneath the previously mentioned foot 42, associated with the cams 36, and

the other end I36 thereof lies below and in camming relation to the locking roller I20. As described below, a closing movement of the door swings the cams 36, and consequently'rocks the,

lever -I3 2 in a clockwise direction: action is without effect if the locking roller I20 is in the normal position, but if such roller is in the looking position, this movement of the lever 'I32'camsthe roller I20 .to the unlocked position. I a

spring 94, ass

' lied upon to restore this assesse 'It is. notedsthat thezlevereaz lies-i m diate y adjacent the plate. 810, :and, the leyer 2 lies immediately. adiacentto :theedeckg being positioned therebetwbensaslowei-...-.end ofth'eBarr-n 88 of. the lever, 464s ofljs so as:to :cleaiz-the ila'nge:90;"sso;that;-the leve-r st '5 maysbe'operated-byqthe insidevhandleiawithoutgale.;, tering thelposition of'thesleverra-fi Considering; now the; operation-.1 of therzsystemin as-ta whole,;;.the parts :are shownjingFigs 2, 3

6 :an'dt in'nthe normal aori .fully'iclosednposition thereof, with the locking button I28 inptheraunzm; l ek dnpo'si-tion, so .-.that. the a. locking: #011613; 2!)

does notinter-fere.-With-fretractingamovemen of, the retracting-lever A6 i If the outsideahandle llfirzxi fi is rocke'dsin a counterclockwise; directio viewed' in Figsal and.. 2,t 'trollba'ck l .62 is: rcorre: sponding'ly'rocked. The engagementsbetwcenrthe rollback l ilZfia-nd -the flange-19.05am .Lthe lever 92 transmits the motion of .-.the rollback to :the leveri.

SZ'e- 'In turn,-the engagement'sbetweemtha flange 90 and the nose 86: of =the retracting. levier. 46 1; causes-the latter t'o swingain'kaclockwise :direction During such movement thetpin. QGqrideszs in the slot 98; associated with the remotelink I 00 effective to hold the rollback H12 and the out-.

side handle I06 in the normal position The clockwise movement of the lever 46, produced by operating either the inside or outside handle, enables the nose 44 thereof to bear against the foot 42, associated with the cams-3fi,- and swing the latter from the full line position of Fig. 5 to the dotted line position thereof. In this latter position, the cams 36 do not interfere with free rotation of the bolt 22 in a counterclockwise or door opening direction. The movement of the lever 46 also elevates the connectlng rod I I0, which, through the stamping 66, elevates the supplement'al'bolt 69 out of range of 1ts cooperating abutment 62. Under the conditions stated, accordingly, the door may freely be opened, and as soon as the supplemental bolt 60 has passed beyond the range of the abutment 62, the inside or the outside handle, as the case may be, may be released, thereby restoring the parts to the positions shown in Figs. 1, 2, 5, 6 and '7. The release of the outside handle enables the ociated with the lever 92, to restore this lever and rollback I82 to the positions shown in Fig. 2. The usual return spring (not shown) ted with the inside handle I03 may be reassoma handle and the link I60 to the positions shown in Fig. 2. Also,- as soon.

as the bolt passes out of ran I springs 40 associated therewith are eliective to restore these cams to the full line position, wh ch action,'through the foot 42, restores the lever 46 to the position shown in Fig. 2. The latter action causes the supplemental bolt iii) to be projected to the position shown in Fig. '7. j I

If the door is now swung towards the closed positiomthe back of the supplemental bolt engages the sloping face of the abutment 62, and this action rocks the bolt 60 in a counterclockwise direction sufficiently to permit the continued door closing movement. W

ge of the earns, the 7 ea t ob arsasai s t ba er u n thas ine".l les o zi s h sw ilti t n..- i v wh ch i s -e =tiY. .-torsrsnt ar -0 e-usua te rt all tq oss e r s e y ;po, ,i i atihe,-g tt6.0.ressesb vpn il heie d-0 eb imsn ib r.

enabled to swing the bolt 60 to the active pos am vem st e-$ r... e.ss eithe the wire QenLth -im e ha dla a imi mi W d? J t actizh b lt 50-12:, 4 r 1. As. ctheldq r c sing vem nt-c nti es. t e a e.oft at.pn eo thet etha14 o the l is i t e up ermostpd it n e es o .:of; t e eeper -?r f 9 lfi l 6ddQ 1. movement e a le h k e r; 52in roe,

a clockwise direction; bringin the V tooth-Zfl-intoholding engagement with;.-thej;.face; V ,Theclockvvise e. applie t0:t e;'bo tr i y. t e. k per. t co e bles t e corr snondinelinns ooth 6 s next-s11 essi a d sw netthemjn a cou tem i sufficiently far ,to; enable- .suclr o o: PaSS -thQ' 1,: 081115.", As -soo 3 35 91131 has passed the cams, the prin s. a e fissur -t re t rethey;

e iu t-mentioned o k ne m vement of, the

In i 1. latent the kickofi lever I32 cams the roller I20 back to the normal or unlocked position;

. Although only a single specific embodiment of the invention has been described in detail, it will be appreciated that various modifications in the form, number and arrangement of parts may be of the invention.

' second members, the combination of a first bolt carried by one of the members and coop'erable between the members to hold them in a closed position, a second bolt carried by one of the members and cooperable between the members to hold them in a partially closed position, amovable support for at least one of said bolts, and operating means including means operable to effect a movement of said support and render said one bolt ineffective to hold the members, said. operating means further including means cooperable with the other bolt to render it ineffective to hold the members, said one bo-lt being movable relative to its support so as to enable a closing movement of said members to be effected withou causing 'a movement of said support.

2. In a latch for cooperation between first and second members, the combination of a first bolt carriedby one of the members and releasably 'engageable with a corresponding keeper surface carried by the other member to hold said members in a closed position, a second bolt carried byone of the members and releasably engageable I with a corresponding keeper surface carriedby said one, bolt ineffective to hold the members, said operating means further including means 00- operable with the other bolt to render it inefhen the door reaches fective to hold the members, said one bolt being h: mo eme t. bi i movable relative to its supportso as to enable carried by one of the members and releasably engageable with a corresponding keeper surface carried by the other member to hold said members in a closed position, a supplemental bolt car ried by one of the members and releasably en'- gageable' with a corresponding keeper surface carried by the other member to hold the members in a partially closed position, a movable support for said supplemental bolt, and operating means including means operable to render the first bolt inefiective to so hold the members and to move said support whereby to render the supplemental bolt ineffective to so hold the members' said supplemental bolt being movable relative to its support-so as to enable it toyieldingly pass over the corresponding keeper surface during a closing movement of the members.

4. In a latch for cooperationbetween first and second members, the combination of a bolt carried by one of the members and releasably engageable with a keeper carried by the other member to hold said members in a closed position, holding means engageable with said bolt to urge the same into engagement with said keeper, a supplemental bolt carried by oneof the members and releasably engageable with means carried by the-other member and defining a second keeper surface to hold themembers in a partially closed position, operating means common to said supplemental bolt and to said holding means for retracting the same so as to permit an opening movement of said members, said first-mentioned bolt being cooperable with said keeper during a closing movement of the members to retract said holding means out of holding relation thereto, and said supplemental bolt being retractable by said second keeper surface during a said closing movement. l

5. In a latch for cooperation between first and second members, the combination of a bolt carried by one of the members and releasably engageable with a keeper carried by the other memswingably retractable as an incident to a closing movement of said members.

THEODORE N. KING. 

